Abstract

A new species, Ulnaria shun-biseriatasp. nov., was found in the Shun River of Hunan Province, southern China, and its morphology was described based on light and scannning electron microscope obervations. Ulnaria shun-biseriata is characterized by its lanceolate valve outline, apiculate valve apices, slightly undulate valve margins, mostly biseriate striae, variable central area, and closed valvocopula. Many abnormal valves of U. shun-biseriata were observed in the samples investigated and the most frequent morphological abnormalities consisted of a lack of symmetry relative to the apical axis caused by a unilateral expansion in the middle part of the valve.

Addeddate

2025-05-02 22:17:24

Bhl_virtual_titleid

210913

Bhl_virtual_volume

v.246 (2024)

Call number

10_3897_phytokeys_246_130942

Call-number

10_3897_phytokeys_246_130942

Foldoutcount

0

Genre

article

Identifier

ulnariashunbise246zhen

Identifier-ark

ark:/13960/s24vwmn1hf6

Identifier-bib

10_3897_phytokeys_246_130942

Identifier-doi

10.3897/phytokeys.246.130942

Ocr

tesseract 5.3.0-6-g76ae

Ocr_detected_lang

en

Ocr_detected_lang_conf

1.0000

Ocr_detected_script

Latin

Ocr_detected_script_conf

1.0000

Ocr_module_version

0.0.21

Ocr_parameters

-l eng

Page_number_confidence

49

Page_number_module_version

1.0.5

Page_range

315-327

Pages

13

Pdf_degraded

invalid-jp2-headers

Pdf_module_version

0.0.25

Possible copyright status

In copyright. Digitized with the permission of the rights holder.

Ppi

300

Source

PhytoKeys 246

Year

2024

Show More

Show Less